
Posted a day ago
Senior Frontend Engineer
HallidaySenior Frontend Engineer
Requirements
2+ years experience with React, Proficiency in TypeScript, State management expertise, API integration, Responsive design, Performance optimization
Skills
ReactTypeScriptWeb3
About the role
Responsibilities
- Design and develop responsive, performant frontend applications using React and TypeScript
- Build scalable components, design systems, and testing frameworks for the payments platform
- Contribute to public SDKs and APIs to simplify blockchain payment integration for developers
- Collaborate cross-functionally with product, design, and engineering teams to solve user problems
- Drive technical excellence by improving performance, accessibility, security, and code quality
- Innovate on Web3 user experiences to make complex onchain actions feel simple and intuitive
Requirements
- 2+ years of experience building production frontend applications with React and TypeScript
- Strong proficiency in state management, API integration, and responsive design
- Proven expertise in performance optimization and writing clean, maintainable code
- A product-oriented mindset with a focus on delivering exceptional user experiences
- Ability to work onsite in San Francisco, CA or New York, NY
Preferred Qualifications
- Previous experience with blockchain technologies (EVM, Solana, or Bitcoin) and Web3 libraries like ethers.js, viem, or wagmi
- Background in building payment flows, checkout experiences, or financial products
- Full-stack capabilities including comfort working with APIs and backend services
- Strong design sensibility and experience implementing pixel-perfect interfaces
- Active participation in open source projects
Benefits
- Competitive compensation package including equity
- Unlimited PTO
- Visa sponsorship available for international candidates
- Significant autonomy to build next-generation blockchain infrastructure
About the Company
Halliday is a blockchain company and product lab working to create a unified, cross-chain payments ecosystem. Backed by a16z and Hashed, Halliday's flagship product, Halliday Payments, enables users to seamlessly onramp, swap, and perform onchain actions via the Workflow Protocol.
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Halliday Β· San Francisco
